shared_ptr -> std::shared_ptr

This is one of the first commits in a plan to remove all `using namespace std;` lines in the entire codebase as it is considered anti-pattern today.

Minecraft.Client/Common/Tutorial/CraftTask.h

@@ -14,7 +14,7 @@ public:
 	~CraftTask();
 
 	virtual bool isCompleted() { return bIsCompleted; }
-	virtual void onCrafted(shared_ptr<ItemInstance> item);
+	virtual void onCrafted(std::shared_ptr<ItemInstance> item);
 
 private:
 	int *m_items;